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Historic Bridges in Iowa

3,036 bridges built before 1951 in Iowa still in service today.

Bridges Built Before 1951

The United States has 3,036 bridges in Iowa built before 1951 that remain in active service. These structures are 75+ years old — many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.

Clear
Bridge State Condition Year Built Age (Years) ADT
CREEK Iowa Poor 1928 98 21
CREEK Iowa Fair 1928 98 15
BR RACCOON RIVER Iowa Poor 1928 98 11
BR PERRY CREEK Iowa Poor 1928 98 20
WILLOW CREEK Iowa Poor 1928 98 30
CREEK Iowa Poor 1928 98 78
STREAM Iowa Fair 1928 98 25
UNAMED CR Iowa Fair 1928 98 70
UNAMED CREEK Iowa Poor 1928 98 33
VOLGA RIVER Iowa Fair 1928 98 70
VOLGA RIVER Iowa Fair 1928 98 15
UNAMED CREEK Iowa Poor 1928 98 70
VOLGA RIVER Iowa Fair 1928 98 29
STREAM Iowa Poor 1928 98 15
SMALL STREAM Iowa Fair 1928 98 41
BUCK CREEK Iowa Poor 1928 98 91
TURNER CREEK Iowa Poor 1928 98 62
JACK CREEK Iowa Fair 1928 98 11
HONEY CREEK Iowa Poor 1928 98 5
LOWE RUN Iowa Poor 1928 98 380
GINGER CREEK Iowa Fair 1928 98 180
W BR MILL CREEK Iowa Fair 1928 98 15
STREAM Iowa Fair 1928 98 36
STREAM Iowa Fair 1928 98 35
SKUNK RIVER Iowa Poor 1928 98 29
WALNUT CREEK Iowa Poor 1928 98 15
STREAM Iowa Fair 1928 98 26
SM STREAM Iowa Poor 1928 98 10
SMALL STREAM Iowa Poor 1928 98 60
DRAINAGE DITCH Iowa Poor 1928 98 82
STREAM Iowa Fair 1928 98 47
STREAM Iowa Fair 1928 98 104
STREAM Iowa Fair 1928 98 2,170
CROW CREEK Iowa Fair 1928 98 4,100
ROCK CREEK Iowa Fair 1929 97 190
SHELL ROCK RIVER Iowa Fair 1929 97 919
BNSF RR Iowa Poor 1929 97 1,187
MINERAL CREEK Iowa Fair 1929 97 980
WATERLOO CREEK Iowa Fair 1929 97 860
WATERLOO CREEK Iowa Fair 1929 97 860
DRAINAGE DITCH Iowa Fair 1929 97 1,960
DRAINAGE DITCH Iowa Fair 1929 97 2,260
WINTERS LAKE OVERFLOW Iowa Fair 1929 97 2,130
E TRIB TO ELWOOD CREEK Iowa Fair 1929 97 1,000
W FORK LITTLE SIOUX RVR Iowa Poor 1929 97 4,310
BEEDS CREEK Iowa Fair 1929 97 1,680
ALLEN CREEK Iowa Fair 1929 97 6,500
NATURAL CREEK Iowa Good 1929 97 4,790
JONES CREEK Iowa Poor 1929 97 788
ELKHORN CREEK Iowa Poor 1929 97 2,340

About Historic Bridge Data

Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.

All Bridges Poor Condition Scour Critical Bridge Stats